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3 years ago

A reaction produces 0.861 moles of H2O . How many molecules of H2O are produced?

Chemistry

1 answer:

ioda3 years ago

4 0

Answer:

5.19 x 10²³ molecules of H₂O

Explanation:

1 mole => 6.023 x 10²³ molecules of H₂O

0.861 mole => 0.861mole x 6.023 x 10²³ molecules of H₂O

= 5.19 x 10²³ molecules of H₂O

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3 years ago

Which compound most likely contains polar covalent bonds?

marin [14]

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3 years ago

1826.5g of methanol (CH3OH), molar mass = 32.0 g/mol is added to 735 g of water, what is the molality of the methane 0.0348 m 1.

Snowcat [4.5K]

Answer:

Molality = 1.13 m

Explanation:

Molality is defined as the moles of the solute present in 1 kilogram of the solvent.

Given that:

Mass of $CH_3OH$ = 26.5 g

Molar mass of $CH_3OH$ = 32.04 g/mol

The formula for the calculation of moles is shown below:

$moles = \frac{Mass\ taken}{Molar\ mass}$

Thus,

$Moles= \frac{26.5\ g}{32.04\ g/mol}$

$Moles\ of\ CH_3OH= 0.8271\ moles$

Mass of water = 735 g = 0.735 kg ( 1 g = 0.001 kg )

So, molality is:

$m=\frac {0.8271\ moles}{0.735\ kg}$

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Answer:

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iogann1982 [59]

I’m so sorry if it’s wrong but I think it’s this.....

Answer:

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And I found it on Quora.com
By the way NaHCO3 is Sodium bicarbonate but a.k.a Baking soda
Hoped this helped :)

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3 years ago